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1222 | | Development of Cold Climate Grapes in the Upper Midwestern U.S.: The Pioneer Work of Elmer Swenson | CLARK, M.D. | Plant Breeding Reviews Vol. 4, Chapt. 2 | 2019 | PETITE PEARL | 5 |
1230 | | Identification guide of grapevines grown in a cold climate: Wine grapes | DUBE, G.; TURCOTTE, I. | Richard Grenier | 2014 | PETITE PEARL | 142 |
1339 | | Tom Plocher cultivars in VIVC | PLOCHER, TOM | Personal communication | 2022 | PETITE PEARL | 9 |